Fix tests

Author: chdemko

.github/workflows/php.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ['8.1', '8.2', '8.3']
+        php-versions: ['8.2', '8.3']
     name: PHP ${{ matrix.php-versions }}
 
     steps:
@@ -58,6 +58,11 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
 
+    - name: Install PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: '8.3'
+
     - name: Install dependencies
       run: composer install --no-progress